Find the ph of buffer solution made by dissolving weak acid
A buffer solution is made by dissolving 0.45 moles of a weak acid (HA) and 0.33 moles of KOH into 800 mL of solution. What is the pH of this buffer? Ka = 5.9 × 10-6 for HA.
Expected delivery within 24 Hours
A bright orange ceramic "Fiestaware" plate is found to have an activity of 12.49 disintegrations per second (Becquerels or Bq), due to the uranium-238 used in the pigment. The half life for decay of uranium-238 is 4.5 x 109 years. Assuming that ur
You have researched a new type of switch and proved that upgrading your switches to this model is feasible. What step do you take next before replacing your old switches?
A sealed flask contains 0.65 g of water at 28 ^circ {rm{C}}. The vapor pressure of water at this temperature is 28.36 {rm mmHg}.
A certain monoprotic weak acid with Ka = 6.8 × 10-7 can be used in various industrial processes, but is no longer used in chemistry teaching labs because it tends to explode when it gets old. (a) What is the [H+] for a 0.748 M aqueous soluti
A 2 L bottle of a carbonated beverage (Coke) at 20 °C is placed in a cooler with 10 L of saturated liquid water and 30 kg of ice (both at 0.01 °C).
The forward-bias current in a GaAs pn-junction at T = 300 K is ID = 15 mA. The reverse-saturation current is IS = 10^-19 A. Determine the required forward-bias diode voltage.
a 0.5118 gram sample of CaCO3 is dissolved in 6 moles of HCL, and the resulting solution is diluted to 250.0 ml in a volumetric flask. How many moles of Ca2+ are in a 25.00 ml aliquot of the solution.
Ethylene glycol, antifreeze, has a density of 1.11 g/cm^3. What is the mass, in grams, of 410 mL of ethylene glycol?
1936534
Questions Asked
3,689
Active Tutors
1436950
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
You will use project management tools and strategies to propose how you would support and potentially implement a nursing informatics project.
Communication, creativity and decision-making skills are essential to daily life. In this course, you learned about the development of language
Read the section in your textbook discussing the various ways culture impacts our memory on p. 283-285 and refer back to it for the following questions:
Read the following case study on a patient who was diagnosed with a personality disorder: Jodie is a 31-year old woman who comes to you for treatment.
Describe factors which may mediate the effect(s) of technology in your selected stage (e.g., education, gender, socioeconomic status, culture, or family and par
What were the early signs that Steven was developing differently after his illness at age 2?
Explain the evolution of mental health treatment from the 1400's to today. Include details about asylums, the pros and cons of deinstitutionalization